The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-01-437-3396, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-437-3396 |
| Primary Part Number | EA23-3CHP-RWBX |
| Item Name | Gage,compound Pressure-Vacuum,di |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Scale Range | +0.0 TO 30.0 INCHES AND +0.0 TO 400.0 POUNDS LBS |
| Dial Size | 3 1/2 IN.DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EA23-3CHP-RWBX PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| SA23-3CHP-RWBX | 5/9 Secondary reference Weksler Glass Thermometer Corp |
| PL9001D-00-C | 5/9 Secondary reference Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
| PL9001D-00-CR-1 FIND NO.4 | D/9 Drawing number reference only Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
NSN 6685-01-437-3396 is a Gage,compound Pressure-Vacuum,di, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-437-3396 has 1 manufacturer part number on file: EA23-3CHP-RWBX (Ashcroft Inc Dba Heise).
Key specifications for EA23-3CHP-RWBX: Scale Range: +0.0 TO 30.0 INCHES AND +0.0 TO 400.0 POUNDS LBS; Dial Size: 3 1/2 IN.DIA IN; Special Features: NOT FOR SHIPBOARD USE. 2 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.